Atma-Sphere Class D… Amazing

I can close my eyes and tell you what something sounds like. Try telling me what they look like on paper with your eyes closed.

I am not sure that is universal.
Both my old and new preamps have very similar harmonic structure, and they have a similar (lack of bad) sound… and the graphs on the reviews look exactly like what Ralph describes.
So just because you cannot hear it looking at the graph, doesn’t mean that Ralph and others can’t.

One negative thing about the ASR testing, is that they only focus on SINAD, and I find a hissing amp to be pretty distressing, and would take some harmonic distortion over hissing. And then there is no weighting, like a discount for 2nd and 3rd harmonic, compared to all/any spray to the right… but the Audio Precision test equipment just kicks out a signal number.

So I do not think that it is out of the question for Kurbio to ask for objective proof. Ralph has been talking about the distribution of the harmonics for a while, so to see it would be dandy way to objectively show some of what makes them sound good..

I can close my eyes and tell you what something sounds like. Try telling me what they look like on paper with your eyes closed.

I am not sure that is universal.

@holmz Nobody here is saying anyone’s opinion/tastes are universal, but they’re indicative of what one might expect in terms of a product’s sound signature. If any of us have learned anything in this hobby it’s that there is no “universal” truth in music reproduction. But that doesn’t mean one can’t get an INDICATION of what someone might expect out of a component. Case in point, if someone says something sounds warm with somewhat recessed highs that will go a long way to helping someone who may be looking for a highly detailed and more neutral-sounding component. Universal truths are pretty much a myth in this hobby given the myriad of variables involved, not the least of which is each person’s individual preferences and how they hear things. Just my take/experience FWIW.

So I do not think that it is out of the question for Kurbio to ask for objective proof. Ralph has been talking about the distribution of the harmonics for a while, so to see it would be dandy way to objectively show some of what makes them sound good..

Indeed it would be nice to see the freq response versus load, the distortion spectra, etc....Too bad this info hasn't been forthcoming. Not sure how to interpret that...

Well, I just put in my order for a pair of Atmasphere Monoblocks.

I was not considering Class D amps, but when Ralph embarked on this new path, I have been very interested in giving them a try.

And, as many know, I am a Vandersteen guy, so owning a Time and Phase Correct speaker meant using a Zero Feedback amp for optimal results.

Atma's new Class D amps use feedback, but Ralph believes that Class D allows for more Gain Balance Feedback that conventional amp do, and without the negative effect of adding high ordered harmonics.

(I hope I got this right Ralph...)

Bob

B

Indeed it would be nice to see the freq response versus load, the distortion spectra, etc....Too bad this info hasn't been forthcoming. Not sure how to interpret that...

@kuribo negative innuendo may not be a good strategy for it.